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纳滤膜降氟试验研究

发表时间:2010-09-15  浏览量:1652  下载量:641
全部作者: 刘训东,宫景雯,杨宏伟
作者单位: 清华大学环境科学与工程系;中国矿业大学(北京)化学与环境工程学院
摘 要: 以自配高氟水为原水,研究压力、温度和浓度等因素对NF90型和NF270型纳滤(nanofiltration, NF)膜降氟效果的影响。结果表明:纳滤膜对F-的截留率随压力的增大而升高,在压力达到一定值后,截留率变化趋于平缓;膜通量随压力的增大而升高;对于NF270膜,随着温度的升高,F-的截留率有所下降;而对于NF90膜,温度对F-截留率的影响不明显;高氟水中F-的浓度对截留率以及膜通量的影响不大。
关 键 词: 化学分离工程;纳滤;膜分离;饮用水;氟
Title: Study of fluorine removal by nanofiltration
Author: LIU Xundong, GONG Jingwen, YANG Hongwei
Organization: Department of Environmental Science and Engineering, Tsinghua University; School of Chemistry and Environmental Engineering, China University of Mining and Technology (Beijing)
Abstract: The effects of pressure, temperature and concentration on the removal of fluorine from synthetic high-fluorine water by nanofiltration (NF) membranes (NF90 and NF270) were investigated. The results show that there is a corresponding increase of the fluorine retention rate with the increasing of pressure. But, when the pressure reaches a certain value, the fluorine retention rate changes flattening. The membrane flux increases with the increasing of the pressure. For NF270 membrane, the fluorine retention rate has a slight decline with the increasing of temperature; nevertheless, there is an insignificant effect for NF90 membrane. In high-fluorine water, the effects of fluorine concentrations on the fluorine retention rate and membrane flux are little.
Key words: chemical separation engineering; nanofiltration; membrane separation; drinking water; fluorine
发表期数: 2010年9月第17期
引用格式: 刘训东,宫景雯,杨宏伟. 纳滤膜降氟试验研究[J]. 中国科技论文在线精品论文,2010,3(17):1771-1775.
 
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